Geoffrey Hughes is Professor of the History of the English Language at the University of the Witwatersrand in Johannesburg, South Africa. A graduate of Oxford University, he has held academic and research posts at Cape Town, Harvard and Turin. His main interests are in historical semantics and sociolinguistics on which he has written over twenty papers and two books, "Words in Time" (Blackwell, 1988) and "Swearing" (Blackwell, 1991). He is a consultant for the Collins Dictionaries on South African English and has been editor of the journal "English Studies" in Africa.